Blockchain Security Breach of $91 Million: User’s Bitcoin Stolen
- Blockchain security breach on August 19, 2025 records a loss of 783 BTC.
- User’s Bitcoin stolen via sophisticated social engineering tactics.
- Investigation exposes laundering through privacy-focused Wasabi Wallet service.

A user lost 783 Bitcoin, valued over $91 million, on August 19, 2025, due to a sophisticated social engineering scam which was detailed by blockchain investigator ZachXBT.
The incident highlights growing security threats in the crypto sector, emphasizing user vulnerability and potential impacts on market stability without immediate price fluctuations recorded.
The theft of 783 BTC, equivalent to $91 million, was exposed on August 19, 2025. Blockchain investigator ZachXBT and others highlighted the severity of emerging social engineering threats within the cryptocurrency sector.
ZachXBT reported the incident on social media, identifying a trend of scammers impersonating both exchange and hardware wallet support teams. Binance released warnings urging vigilance against deceptive practices that target consumer trust in official communication.
The immediate impact on individual users’ trust and market sentiment is significant. The Bitcoin market, however, did not experience a substantial price shock. The event has heightened concerns among users and stakeholders over security vulnerabilities.
Financially, the theft represents a considerable loss attributed to advanced social engineering techniques. This incident also poses challenges for regulation and enforcement amid increased sophistication within offending groups.
Overall, the incident places emphasis on the need for rigorous security measures and user awareness. As the industry grapples with socio-technical challenges, ensuring robust user protection remains a priority for exchanges and wallet providers.
Experts stress improvements in multi-factor authentication and verification practices, paralleling historic trends of security breaches in the digital currency sector. ZachXBT, Blockchain Investigator, said, “The attack’s tactics involved impersonation of both exchange and hardware wallet support staff, primarily via SMS and direct messaging.” Ensuring such protocols becomes critical in mitigating repeat occurrences in the financial landscape.